Watch The Supergirl Season 3 Finale Promo

Watch the Supergirl season 3 finale promo!

The CW has released the the promo for next week’s new episode of Supergirl, the season 3 finale! Check it out in the player below!

Set to air Monday, June 18, the Supergirl season 3 finale is titled “Battles Lost and Won” and is offcially described as follows: “SHOCKING SEASON FINALE – Supergirl (Melissa Benoist) and team take on Serena in an epic battle for Earth.”

Jesse Warn directed the episode which was written by Robert Rovner & Jessica Queller.

“Make It Reign” has been directed by Armen V. Kevorkian and written by Ray Utarnachitt & Cindy Lichtman. The episode is set to air on Monday, June 11.

Based on the DC characters created by Jerry Siegel and Joe Shuster, the series is executive produced by Greg Berlanti, Sarah Schechter, Robert Rovner and Jessica Queller. Supergirl is produced by Berlanti Productions in association with Warner Bros. Television.